I would say your tailor is probably right here. At first, it looked about the right length (from a classical perspective), but then I realised that you are wearing your jeans quite low.
Another thing is that I can see the tailor's pin. And, the patch pocket will be much too close to the bottom of the jacket; it would look almost comical. I suggest that it be sent back.
Thanks! I sent it back long ago, it was right. Then I found some other brands that offer short versions. It was such a good deal that I didn’t want to believe what the tailor told me!